Shock-absorber



G. G. F. BOSWELL.

SHOCK ABSORBER. APPLICATION men NOV. 2|, 1919.

Patented S ept. 14,1920.

FIG. 5.

INVENTOR. 650865 6.1-. 805 WLL EiHQCK-ABSORBER.

Specification oi Letters l atent.

Patented Sept. M, 19",?

.hpplication filed Novcmber'2l, 1919. Serial No. 339,585.

1,242,316 and the prime feature of this in- I vention, in. addition to providing a spring structure for taking up and absorbing all shocks incident to impacts and rebounds, IS

F in so constructing the spring structure that it will normally maintain the shackle and shackle plates in an upright position, the shackle plates being normally held in a vertical position. so that the upper pivot end thereot will be vertically above the pivot end of the perch hanger.

A further feature of the invention is the provision of a-shock absorbing spring so constructed that it will resist and cushion any downward movement of the body spring and parts carried thereby and likewise resist any endwise movement of the body spring, thus practically eliminating swaying movement of the car body.

A further feature of the invention is the provision of means for suspending the body spring so that it will have the same. relative movement around the pivot end of the perch hanger and be suspended practically the same distance therefrom.

A further feature of the invention is in so constructing the parts for suspending the body spring from the perch hanger that said parts will have different pivotal points separately brought into action during different movements of the body spring.

@ther objects and advantages will be hereinatter more fully set forth and pointed out in the accompanying specification.

lln the accompanying drawings which are made a part of this application,

Figure 1 is a front elevation of an automobile axle of the Ford type showing the manner of applying the shock absorber springs to the body spring and perch hanger.

Fig. 2 is a sectional view of the hanger construction at one end of a body spring.

Fig. 3 is a top plan view thereof.

Fig. l is" a top plan view of one of the shackles removed from the body spring.

Fig. 5 is an elevation of one end of a body spring showing a difl erent form of shock absorber spring.

Referring to the drawings, 1 indicates an automobile axle of the Ford type and Qjindicates the perch hanger associated therewith, these parts being of the usual forma tion. Cooperating with the hangers 2 is a body spring 3 also of the usual type, the ends thereothaving bolt receiving eyes 4, as is usual, said spring being preferably built up of a plurality of leaves.

In the ordinary construction of cars of this class, the body springs are suspended from the perch hangers by shackle plates which extend downwardly from the pivot end of the perch and are pivoted direct to the end of the spring, but in this construction, the shackle plates 5 are swung upwardly to a vertical position with the pivot end thereof above the pivot end of the porch. hanger and a shackle b ispivoted at one end to the upper ends of said plates 5, said shackle having arms which pass along opposite edges of the body spring and the free ends thereof are secured to the body spring by passing a pivot bolt 8 through said arms and the eye 4 at the end of the body spring.

The shackle 6 is so curved and is of such a length that the end of the body spring 3 will be suspended substantially the same distance below the pivot end of the hanger 2 and will have the same relative arcuate swinging movement therewith, as when the shackle plates are extended directly from the perch hanger to the end of the body spring.

" l-n suspending the body spring in this manner, an end thrust of the body spring will cause the shackle 6 to pivot on the ,bolt 9, employed for securing the shackle to the upper ends'of the shackle plates 5, thus causing the end of the body spring to swing in an are of a circle around the pivot end of the perch hanger 2, but when a vertical movement is imparted to the body spring, the pivot action will. result at both the pivot point between the shackle and shackle plates and between the shackle plates and the perch hanger, the principal pivot action, in this instance, resulting at the pivot connection between the plates 5 and hanger.

In order to cushion the movement of the body spring, either vertically or end-wise, and at the same time maintain the shackle am use Cad plates normally in a vertical position, a shock absorbing spring is provided, the body portion 11 of the shock absorbing spring having a looped portion 12, that portion of the spring 10 beyond the looped portion terminating in a bowed member 13, the free end 1% of the bowed member passing between the cross head 15 of the shackle and the pivot end of the perch hanger 2, the extreme end of the portion l l being curved to conform to the curvature of the end of the perch hanger, the end portion 14 passing between the shackle plates 5.

. The looped portion 12 enters a seat 1.5 formed in a cross bar 1'2", the ends of the cross bar being attached to the arms 7, the looped portion being secured in the seat by means ol' pin 18, By anchoring both ends of the bowed member 13, as shown, the tension thereof will serve to normally hold the shackle plates in a vertical position, while any pivotal or swinging movement of the shackle or shac rle plates will be resisted by of the body spring A portion is secured to the body in the usual or any preferred mantly forms a part of the b c lie the shock absorber A displacing the top leaf or it will. be understood J5 the cdy spring leaves may b shock absorbing spring or" engagement with e loop portion there- ,oance above the body oveinent olthe body n will first ,e directed sorber spring, the re tered pra 'cally i it is transmitted.

portion 13, the ember being such lne endwise rnoveconseqnently the is shown 1* is formed in two secured to the le manner, as by emainder of this o rin shown in 3 in as; clip instances The invention claimed is:

l. The combination with a semi-elliptical spring oi: a vehicle, of a shock absorber construction including pivoted shackle plates, a spring supporting shackle pivoted at one end to the upper ends of said plates and at its lower end to the vehicle spring, a shock absorbing spring secured to the vehicle spring and having a bowed portion cooperating with said plates and shackle for re sisting movement of the vehiclespring.

2. The combination with a vehicle body spring, and a perch hanger, of a shock absorber construction. including shackle plates pivoted at one end to said perch hanger and extending vertically thereabove, spring supporting shackle pivoted at one end to the upper ends of the shackle plates and at a point vertically over the pivot end of the perch hanger, the opposite end thereof being pivoted to the body spring, and a shock absorbing spring connected to the body spring, said shock absorbing spring having a looped portion for connection with said shackle and a bowed portion for normally holding said shackle plates in vertical position and for resisting movement oi the body spring.

3. T he combination with a vehicle body spring and a perch hanger, of shackle plates pivoted at one end to said perch hanger, a shackle pivoted at one end to the opposite ends of said plat an d at its opposite end to said body spr a shock aosorbing spring connected with said body spring, said shock ab orbing spring having looped portion s length, means for See ring the looped po tion to the shackle, and bowed portion extending from said loop" Q over the pivot point between said 1 shackle, the free end the bowed lates and co, aecting passing between said he hanger.

with the pivot end 4-. The coinbinat with a vehicle body l v o pair oi verticallv c d 1 shackle es, a sheclaile pivoted having -ree end assed between said plates, a ved to s1 ort said plates in vertical position cushion and resist movement oi said be spring.

5. The cornbinatior with a vehicle spring. a shackle i said spring, and shackle fli hich the shackle is pivoted, of a heck RbSOI'UEI spring secured to and for i a part oi. said vehicle spring, and race for connecting par" said shock absorber spring to said shackle and lOli plates for normally holding said plates in a vertical plane and resist movement of the vehicle sprin 6. The COIIilIlfitlOIl with a vehicle spring formed of leaves, shackles for supporting said spring, and shackle plates to which said shackles are pivoted, of a shock absorber spring forming one of the leaves of said vehicle spring, and bowed members at the ends of the shock absorber springs cooperating with said shackles and shackle plates for resisting movement of said vehicle spring.

7. The combination with a vehicle spring, and a perch hanger, of shackle plates pivoted at one end to said perch hanger and extending vertically above the pivot end of the perch hanger, a shackle comprising across head, arms depending from the cross head, means for pivoting the cross head to the upper ends of said shackle plates, a cross bar between said arms having a seat therein, a shock absorber spring connected with said vehicle spring and having a looped portion adapted to enter said seat in the cross bar, and a bowed member beyond the looped portion the free end of which is passed between said shackle plates and be tween the cross head of the shackle and the pivot end of the perch hanger, the extreme signature.

GEORGE G. F. BOSWELL. 

